Why don't use Lua 5.3?

[2Ha]

Have no time？Too much work？OR Lua 5.1 is the best?

[slime]

LÖVE uses LuaJIT, which is based on Lua 5.1. LuaJIT's main benefits over regular Lua versions are performance (it's 1.5-150x as fast as stock Lua) and its ability to use C data structures and call C functions directly, via its FFI.

[zorg]

And LuaJIT also adds in a few 5.2 and 5.3 features... and löve itself also adds in even more functions that can be found in newer lua versions too.